Malicious PDF — malware analysis report

Static analysis result for SHA-256 459d9af7060b11a0…

MALICIOUS

PDF

71.6 KB Created: 2020-11-13 03:40:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: dcd3136dc4b47c5b1037f38d399242bb SHA-1: e77dc7ad3a491ed6862e618e62361c0865b378c2 SHA-256: 459d9af7060b11a0e9fc22b9a196f4ffce0f516de12978b2e8894a24573dfc57
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a game.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/strik?utm_term=dragon+ball+z+ultimate+Tenkaichi+bab PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5fa18ce5120ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371790/normal_5f97edcbdd1f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_5f962ea189470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475215/normal_5fadc247005b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/mojijosaduzufev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/561e50ae-6cdf-4689-a84c-bb015966d262/mobile_rv_repair_denver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/693b6205-17cf-42f9-bf83-211813b6abe5/29099052738.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9e529f0-08b8-4f77-a0a2-f5181a1a4dbd/93178186839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c62f8a19-02e8-42be-9dc1-0a54c63eabdb/zijunadufakamatur.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB6 5332 bytes
SHA-256: 0c38c1288ffa20a50d7f3e342032a396200cd3911c8d72a207cbef6de7f72a65
font_01_sfnt_off0000ecc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC8 10912 bytes
SHA-256: 6e8ccbd845e9a18817c1cd9a0c609612f0821bffe4a848ef5ca35228213d07aa

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